The Philosophical Writings of Niels Bohr, Vol. 1 Quotes

“Just as the freedom of the will is an experiential category of our psychic life, causality may be considered as a mode of perception by which we reduce our sense impressions to order.”
― Niels Bohr, Atomic Theory and the Description of Nature

“Isolated material particles are abstractions, their properties being definable and observable only through their interaction with other systems.”
― Niels Bohr, Atomic Theory and the Description of Nature

“The great extension of our experience in recent years has brought light to the insufficiency of our simple mechanical conceptions and, as a consequence, has shaken the foundation on which the customary interpretation of observation was based.”
― Niels Bohr, Atomic Theory and the Description of Nature